Abbass, H. L. (1973). SOME BRITISH CRETACEOUS GASTROPODS BELONGING TO THE FAMILIES PROCERITHIIDAE CERITHIIDAE AND CERITHIOPSIDAE CERITHIACEA. Zenodo.
Citazione stile Chigago Style (17a edizione)Abbass, Houssein Loutfy. SOME BRITISH CRETACEOUS GASTROPODS BELONGING TO THE FAMILIES PROCERITHIIDAE CERITHIIDAE AND CERITHIOPSIDAE CERITHIACEA. Zenodo, 1973.
Citatione MLA (9a ed.)Abbass, Houssein Loutfy. SOME BRITISH CRETACEOUS GASTROPODS BELONGING TO THE FAMILIES PROCERITHIIDAE CERITHIIDAE AND CERITHIOPSIDAE CERITHIACEA. Zenodo, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.